# PESD3V3L1UL

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · DFN1006-2

PESD3V3L1UL from TECH PUBLIC, in a DFN1006-2. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | One terminal of the 1-line uni-directional TVS diode, with a 3.3 V maximum reverse working voltage and 0.5 pF maximum junction capacitance measured between pin 1 and pin 2 at VR = 0 V, 1 MHz. |
| 2 | 2 | passive | Second terminal of the 1-line uni-directional TVS diode, forming the other side of the protected line with pin 1, with a 4.2 V minimum breakdown voltage at IT = 1 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | DFN1006-2 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `PESD3V3L1UL`
- Footprint: `Diode_SMD:D_SOD-882`
- 3D model: DFN1006-2 (KiCad packages3D, STEP)
- 3D model files: `pesd3v3l1ul-etched.step` / `pesd3v3l1ul-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pesd3v3l1ul.step` / `pesd3v3l1ul.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590931184803532800) (4 pp, sha256 `774abea628a8d61f`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/pesd3v3l1ul-datasheet.pdf)